A free app for Android, by Biosom.
Hearing Guardian is a free app that can be downloaded on Android devices. It uses sound wave technology to improve your hearing. It is a simple, intuitive, and easy-to-use app. You just need to plug in a headset and go to a quiet environment.
After you have adjusted the volume of each index up and down, you can click on "Finish the test" and choose the time to start the process.
The sound wave will be sent to your ear and will fight the ringing in the ear. It can also help with mild and moderate hearing loss caused by noise pollution or natural aging.
It is free for 14 days.
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